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Restore FPU state. Code from kkojima.

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This commit is contained in:
Roland McGrath 1994-09-03 02:31:57 +00:00
parent 9ebc812a40
commit 7704bac4de
1 changed files with 24 additions and 2 deletions
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26
sysdeps/mach/hurd/mips/sigreturn.c
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@ -77,8 +77,30 @@ __sigreturn (struct sigcontext *scp)
if (scp->sc_coproc_used & SC_COPROC_USE_FPU)
{
/* XXX should restore FPU state here */
abort ();
/* Restore FPU state. */
#define restore_fpr(n) \
asm volatile ("l.d $f" #n ",%0" : : "m" (scp->sc_fpr[n]))
/* Restore floating-point registers. */
restore_fpr (0);
restore_fpr (2);
restore_fpr (4);
restore_fpr (6);
restore_fpr (8);
restore_fpr (10);
restore_fpr (12);
restore_fpr (14);
restore_fpr (16);
restore_fpr (18);
restore_fpr (20);
restore_fpr (22);
restore_fpr (24);
restore_fpr (26);
restore_fpr (28);
restore_fpr (30);
/* Restore the floating-point control/status register ($f31). */
asm volatile ("ctc1 %0,$f31" : : "r" (scp->sc_fpcsr));
}
/* Load all the registers from the sigcontext. */